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allow lists of any type as loop variable #2616

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merged 9 commits into from
Jan 23, 2022

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@charles-cooper charles-cooper commented Jan 22, 2022

What I did

allow lists of any type as loop variable

How I did it

added a function new_type_to_old_type so that we can use the results of the type checker directly. eventually this can replace the old parse_type function.

How to verify it

struct X:
    y: uint256
@external
def foo(xs: DynArray[X, 5]) -> uint256:
    sum: uint256 = 0
    for x in xs:
        sum += x.y
    return sum

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@charles-cooper charles-cooper changed the title Fix for typecheck allow lists of any type as loop variable Jan 22, 2022
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codecov-commenter commented Jan 22, 2022

Codecov Report

Merging #2616 (02e3c02) into master (df54e00) will decrease coverage by 0.12%.
The diff coverage is 65.71%.

Impacted file tree graph

@@            Coverage Diff             @@
##           master    #2616      +/-   ##
==========================================
- Coverage   86.66%   86.53%   -0.13%     
==========================================
  Files          91       92       +1     
  Lines        9433     9457      +24     
  Branches     2359     2369      +10     
==========================================
+ Hits         8175     8184       +9     
- Misses        773      781       +8     
- Partials      485      492       +7     
Impacted Files Coverage Δ
vyper/codegen/lll_node.py 94.02% <ø> (ø)
vyper/semantics/validation/local.py 91.48% <ø> (-0.76%) ⬇️
vyper/codegen/types/convert.py 61.29% <61.29%> (ø)
vyper/codegen/stmt.py 88.31% <100.00%> (+0.75%) ⬆️
vyper/builtin_functions/functions.py 88.26% <0.00%> (-0.34%) ⬇️

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@charles-cooper charles-cooper marked this pull request as ready for review January 23, 2022 04:56
# override with type inferred at typechecking time
subtype = BaseType(self.stmt.target._metadata["type"]._id)
iter_list.typ.subtype = subtype
target_type = new_type_to_old_type(self.stmt.target._metadata["type"])
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Note: investigate why target type != iter.subtype

@fubuloubu fubuloubu merged commit 5a7d8de into vyperlang:master Jan 23, 2022
tserg pushed a commit to tserg/vyper that referenced this pull request Feb 2, 2022
* allow arbitrary types in loop lists

* fix lint

* fix mypy

* add a test

* fix loop target inference

* prune some now-invalid tests

* fix lint

* add a note to revisit type checker

* add a nested static array test
tserg pushed a commit to tserg/vyper that referenced this pull request Feb 8, 2022
* allow arbitrary types in loop lists

* fix lint

* fix mypy

* add a test

* fix loop target inference

* prune some now-invalid tests

* fix lint

* add a note to revisit type checker

* add a nested static array test
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3 participants